Scope for a SECOND, shadow-only lane to catch PLSM-class vertical squeezes the
pullback-ORB scorer is structurally blind to (PLSM was evaluated 1895x and
blocked ~30% every time — a vertical gives no pullback). Produced by a read-only
4-agent mapping workflow; no code changed.
Key findings: detect on blue-sky fresh-HOD + price velocity + ABSOLUTE volume
burst (NOT RVOL, which zeros out on thin IPOs; NOT float, which is NULL). Emit a
new ShadowSignalEvent that the execution snapshot (query_ready_signals_snapshot,
filters event_type=signal_ready) can never read -> structurally cannot trade.
Score nightly by reusing the labeler + eod_replay forward-outcome machinery.
Pre-register the promotion bar (runner-vs-trap separation, distinct-runner n)
before shadowing. Phased P0 detector -> P1 dark emission -> P2 nightly scoring ->
P3 validation -> P4 tiny live lever only after separation is proven. Strictly
additive; never touches the ORB book or anti-chase guards.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
